Terry Riley in Concert Robert Worby meets minimalist pioneer Terry Riley and introduces music from his concert at the Triptych Festival in Glasgow, including a new realisation of the classic 1960s piece A Rainbow in Curved Air, and recent pieces for two pianos: Cinco de Mayo, Jazz Time and Etude from the Old Country. Plus a chance to hear archive recordings of some early Riley works. Terry Riley (keyboards) William Winant (percussion) Mikail Graham (electronics) Sarah Cahill, Joseph Kubera (pianos).